C# Getting all types that implement an interface

GetAllTypesThatImplementInterface.cs

var myInterfaceTypeOf = typeof(IReadDbMapping);

var implementations = AppDomain
            .CurrentDomain
            .GetAssemblies()
            .SelectMany(assembly => assembly.GetTypes())
            .Where(type => myInterfaceTypeOf.IsAssignableFrom(type)
                && type.IsClass
                && !type.IsAbstract
                && !type.IsInterface)
            .ToList();
            
foreach (var type in implementations)
{
	var instance = (T)Activator.CreateInstance(type);
}